Traction gang-plow.



No. 800,710. PATENTED OCT. 3, 1905. A. E. BISHMAN, DEGD.

A. BISHMAN, ADMINISTRATOR.

TRACTION GANG PLOW.

APPLIOATION FILED JAN.30,1903.

3 SHEETS-SHEET 1.

No. 800,710. PATENTED OCT. 3, 1905. A. E. BISHMAN, DEGD.

A. BISHMAN. ADMINISTRATOR.

TRACTION GANG PLOW.

APPLICATION FILED JAH.30,1903.

3 SHEETS-SHEET 2.

PATBNTED OCT. 3, 1905. A. B. BISHMAN, DEGD.

A. BISEMAN, ADMINISTRATOR.

TRACTION GANG PLOW.

APPLICATION TILED JAN. 30, 1903.

3 SHEETS-SHEET 3.

am 265%. Qd m. 0 m b Wax 03566. Q Bail-5% PATENT OFFICE.

LDAM. BISHMAN, OF OTISCO, MINNESOTA, ADMlNlSTRATOR OF ADAM E. BISHMAN, DECEASED.

TRACTION GANG-PLOW.

Specification of Letters Patent.

Patented Oct. 3, 1905.

Application filed January 30, 1903. Serial No. I LLZZO.

."o (ti/Z 1071 0111 (It 71111141 cornea/'71.:

Be it known that Al)Al\l' E. Brsu'iiAN, de-

eased, late a citizen of the United States, and .residentof Otisco, in the county of \Vascca, itate of Minnesota, did invent certain new .nd useful Immovcments in Traction Granglows, and that ADAM BisnMAN, of the same ilace, as administrator of the estate of said iDAM E. BIsi-rMAN, does hereby declare the 'ollowing to be a full, clear, and exact descri pion of the invention, such as will enable others killed in the art to which it a iipertains to cake and use the same. I This invention is especially directed to the mprovement of gangplows which are driven py a motor carried by the frame thereof, and gias for its object to improve the same in the :cveral particulars hereinafter noted.

The invention is illustrated in the accom- )anying drawings, wherein like characters in licate like parts throughout the several views.

Figure 1 is a plan view of the plow. Fig. 3 is a left side elewttion of the same, and Fig. l is a front elevation of the plow with some aarts broken away and with others sectioned.

The frame of the plow is preferably formed from angle-iron bent to form an approxinately triangular and horizontally-extendcd akeleton a, which at its central portion is oraced by a pair of transversely-extended tieoars a (a and at its contracted rear portion is provided with a supplemental section or bracket o This frame is supported by two traction-wheels 7) and b and by a loose groundwheel 73.- The shaft 7) of the rear tractionwheel 7/ is loosely journaled in suitable bearings 7), secured on the rear portion of the main frame, and carries a large sprocket c, which receives motion from the said wheel 7/. The forward traction-wheel is rigidly connected to one section (Z of a sectional drivingshaft (1 (.Z' J. The shaft-sections (Z and (1 extend at an angle one to the other and are connected by a knucklc ioint (Z The shaft-sections (Z' and (Z are adapted to be connected in any suitable way, and, as shown, they are connected by pulley or drum like couplings (.Z and 11". For the purposes of this case the detail of construction of these parts (Z and (1* need not be further considered. Said shaftsections (Z' and (Z are suitably mounted in bearings 11. a on the sides of the frame (1 The shaft-section (Z is supported by an oscillating sleeve a, which is pronged to embrace the small sprocket f.

kn uckle-joint cl and to form a pivotal connection with similar prongs of the bearing a. The shaft-section (Z carries a large drivingsprocket and the shaft-section carries a similar driving-sprocket c".

The ground-wheel 7 is loosely mounted on the laterally-projecting trunnion of a short vertically-disposed shaft 0, which shaft in turn is loosely journaled in a bearing a rigid on the left'hand side of the frame (1 To the upper end of the shaft (2 is rigidly secured an arm a. The oscillating bearing-sleeve a, which supports the wheel I), is provided with an arm 0 To a bracket a, secured on the tie-bare, is pivoted a bell-crank a, one arm of which is connected to the arm cby a rod or link 0 and the other arm of which is likewise connected to the arm a by a rod or link (2 The wheels 7) and 7/ are thus connected for parallel oscillating movements, so that they serve to steer the machine.

The bell-crank 0" has a toothed segment (1 which cooperates with a worm (1, carried by a crank-shaft a", mounted with freedom for rotary but fixed against endwise movements on suitable bearings on the tie-bars a a At the rear end of the shaft 0" is a handpiece or crank c'", by means of which the said shaft may be turned in the act of steering the machine.

The character f indicates the motor, which may be any form of motor, but is advisably an explosive-engine.

The character f indicates the crank or driving shaft of the engine, which at one end carries a fly-wheel f and at its other end a A sprocket-chain runs over the sprocket-wheels c and f. A long sprocket-chain 0 runs over the sprocketwheels 0 and 0 By these connections, as is obvious, the two traction-wheels b and I) are positively driven from the enginef.

The plows Z", of which, as shown, there are four, are properly spaced laterally and are located one in advance of the other, ligu red from the land toward the furrow side of the machine. The said plows 7:: have beams h, the two forward members of which are pivoted to lugs 70 on the forward transverse portion of the frame a and the two rear members of which are in a similar manner pivoted to lugs 71 on the transverse bar 0 Again, the two forward plows have their beams tied together by a strap la while the two rear plows likewise havctheir beams tied together by a strap r ,lhe plows are adapted to be raised and lowered independently in pairs by av device preferably constructed as follows:

, m and 1 h a rock-shaft m, mounted in suitallile bearings on the tie-bare. At its inner end the rock shaft m hasa vertically-projecting arm m",

which is connected by a long link i/t to the intermediate portion of the lever HIT. As is evident, the plows may be raised and lowered in pairs and locked in dilferent positions by the manipulation of the latch-levers w, and m Thecharacter indicates the d rivers seat, which is suitablysupported from the main i frame in position to bring the levers m m 1 and crank all within easy reach.

The manner in which the maclnne may be steered and in .which the plows may be raised and lowered has already been set forth. Of

.cou rse either two or four plows may be thrown faceybut not below the same.

' furrow. formed thereby.

traction-wheel 7) is positioned outward of the intoaction at any one time. In the drawings the machine is shown as if standing in a flat surface with the plows dropped onto such sur- The real-most and left-hand plow, it will be noted, runs just in advance of the-rear traction-wheel 7/, so

thatthe said tractionwl1eel will run in the The right-hand forward or right hand the width of a furrow.

Hencein making the lirstcut withthe gang plow thls advance tractlon-wheel (1 .will run on the surface of the ground; but thereafter itwill run in the furrow formed by the left-hand plow on the previous out. i This traction-wheel, therefore, running, as it does, in the furrow cut on the previous trip, serves as a guide for properly directing or steering the machine. Both of the traction-wheels and 7/ are set to work on an incline, so that they will resist the. side draft or crowding action of the plow, and, furthermore,since they both run in furrows they insure the machine against being crowded laterally by the plows. It will also be seen that the two traction-wheels run in the same furrows, but on successive trips. After the traction-wheel 7) is traveled through the furrow, however,

the right-hand plow turns the dirt or sod into The strap k, whichties together the same. The ground-wheel in runs over the surface of the ground, but has but very slight weight to support, since the machine is as nearly as practicable balanced on the two traction-wheels.

The gang-plow above described has been tried in the field and found to be efficient. ilt is of course capable of considerable modification within the scope of the invention as herein set forth and claimed.

livplacing the traction-wheels both on an incline they arenot only made to resist the side thrusts from the plows, but increased traction is also given to the said wheels, which isof course an in'iportant feature. It will also be noted that the plows in the two tractionwheels are located nearly in the same straight line traversing the machine at an angle. This brings the three wheelsof themachineand the plows into av sort of a triangular arrangement and places the wheels where they are best adapted to perform the work for which they are intemled.

\Vhat is claimed, and desired to be secured by Letters Patent of the United States, is as follows:

1. In a gang-mow, the combination with an approximately triangular frame, and a series of plows connected thereto, and located successively, one in advance of the other, from the land toward the furrow side of the machine. and a pair of power-driven tractionwheels, geared to rotate together and supporting said frame, the one mounted in the contracted rear extremity of said frame, back of the rear plow, and the other forward and outward of the most forward plow, substantially as described.

*2. In a gang-plow, the combination with a frame and a series of plows connected thereto, and located, successively, one in advance of the other, from the landtoward the furrow side of the machine, of three wheels supporting said frame, and located one just at the rear of the rear plow, one forward and at one side of the most forward plow, and the other at the opposite side of the machine, from the latternoted wheel, and serving to steady the machine, and the two last-named wheels connected for parallel movement in the steering action, substantially as described.

, In testimony whereof I affix my signatu re in presence of two witnesses.

ADAM BISHMAN, rid/n Hist-111m) lift/I13 :.\'Ifa1/I4f;l(/m// .IL'. [fix/z v/ul'n, (lcc fi lacd.

\Vitnesses:

.i'oim Moos/m, EDNA Learn. 

